tree 6c49961409ad0e3c16b5e2027f515cafecedf39a
parent 4f85cb96d9d2fbbb7160db855a6beee1baced5e5
author Tejun Heo <tj@kernel.org> 1330982129 -0800
committer Jens Axboe <axboe@kernel.dk> 1331065644 +0100

block: make blk-throttle preserve the issuing task on delayed bios

Make blk-throttle call bio_associate_current() on bios being delayed
such that they get issued to block layer with the original io_context.
This allows stacking blk-throttle and cfq-iosched propio policies.
bios will always be issued with the correct ioc and blkcg whether it
gets delayed by blk-throttle or not.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>